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Some mixed exam-like Qs
Joanna van Dyk
Quiz por Joanna van Dyk, atualizado more than 1 year ago
Joanna van Dyk
Criado por Joanna van Dyk quase 9 anos atrás
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12

Resumo de Recurso

Questão 1

Questão
Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2). What is the equation for this reaction?
Responda
  • 2H2O2 = O2 +2H2O
  • H2O2 = 2O + H2
  • 2H2O2 + CO2 = HCO3 + H2 + H2O

Questão 2

Questão
Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2). What is a suitable catalyst for this reaction?
Responda
  • Manganese oxide
  • Phosphorus
  • Sulphur Dioxide
  • Lead Nitrate

Questão 3

Questão
Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2). What is the percentage of oxygen in air at atmospheric pressure
Responda
  • 21%
  • 78%
  • 0.04%
  • 1%

Questão 4

Questão
Other elements can combust in oxygen. Write a balanced equation for the combustion of sulphur.
Responda
  • S + O2 = SO2
  • S + O2 = SO4
  • S + O2 = SO + H2O

Questão 5

Questão
SO2 dissolves in rainwater to form an acidic solution.
Responda
  • True
  • False

Questão 6

Questão
Write a balanced equation for the combustion of hydrogen: [blank_start]2[blank_end]H2 + O2 = 2[blank_start]H2O[blank_end]
Responda
  • 2
  • H2O

Questão 7

Questão
Select two uses for carbon dioxide:
Responda
  • fizzy drinks
  • fire extinguishers
  • sterilization
  • laughing gas

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